Laying an egg is a slang term that means failing or making a huge mistake. To describe the opposite of laying an egg, one might use words like triumph, flourish, succeed or excel. These antonyms convey the idea of achieving something great or accomplishing a goal with ease. Instead of laying an egg, one might soar, shine, or thrive. Other antonyms for laying an egg could include victory or conquest, both connoting successful outcomes. Whatever the context or circumstance, it's always wise to strive for positive results, to never give up or give in to fear, and to believe in oneself.